HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ottawa

$146+ Cheap flights from Baltimore (BWI) to Ottawa (YOW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — YOW
Apr 3 — Apr 101
Fri 4/3
Fri 4/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baltimore to Ottawa with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Baltimore to Ottawa

Cheapest flights from Baltimore to Ottawa
Explore the most affordable flight options available from Baltimore to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:16 pm
BWI
-
YOW
1 stop27h 09m
Multiple Airlines
Thu 4/234:15 pm
YOW
-
BWI
1 stop17h 22m
Multiple Airlines
Deal found 3/2$272
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:49 pm
BWI
-
YOW
2 stops30h 36m
Multiple Airlines
Fri 4/244:15 pm
YOW
-
BWI
1 stop16h 28m
Multiple Airlines
Deal found 3/3$282
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:49 pm
BWI
-
YOW
2 stops30h 36m
Multiple Airlines
Sat 4/254:15 pm
YOW
-
BWI
1 stop17h 10m
Multiple Airlines
Deal found 3/3$283
This Kiwi.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:49 pm
BWI
-
YOW
2 stops23h 36m
Multiple Airlines
Sun 4/264:15 pm
YOW
-
BWI
1 stop16h 28m
Multiple Airlines
Deal found 3/2$287
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:44 pm
BWI
-
YOW
2 stops20h 41m
Multiple Airlines
Thu 4/234:15 pm
YOW
-
BWI
1 stop17h 22m
Multiple Airlines
Deal found 3/3$294
This Kiwi.com deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:49 pm
BWI
-
YOW
2 stops23h 36m
Multiple Airlines
Fri 4/244:20 pm
YOW
-
BWI
1 stop24h 30m
Multiple Airlines
Deal found 2/27$298
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/243:19 pm
BWI
-
YOW
2 stops25h 40m
Multiple Airlines
Tue 4/77:00 am
YOW
-
BWI
1 stop27h 13m
Multiple Airlines
Deal found 3/3$303
This Kiwi.com deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/234:05 pm
BWI
-
YOW
1 stop8h 20m
Multiple Airlines
Tue 3/244:15 pm
YOW
-
BWI
1 stop16h 59m
Multiple Airlines
Deal found 2/28$310

Find flight deals from Baltimore to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$272
(Kiwi.com)

One-way from

$146
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$459
Provider with most accurate pricing for Baltimore/Washington-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baltimore/Washington-Ottawa flights.
Search Deals
From Baltimore/Washington to Ottawa
Search Deals
One-way flight from Baltimore/Washington to Ottawa
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 4, 2026.
Use the filters below to find and compare flights from Baltimore to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 4/22

9:59 pm-4:59 pm

1 stop19h 00m

Ottawa

Sun 4/26

4:15 pm-8:43 am

1 stop16h 28m

$289

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Fri 5/15

9:43 pm-3:15 pm

1 stop17h 32m

Ottawa

Mon 5/18

3:30 pm-8:07 am

2 stops16h 37m

$404

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 4/22

5:49 pm-5:25 pm

2 stops23h 36m

Ottawa

Sat 4/25

4:45 pm-11:54 pm

1 stop7h 09m

$443

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 4/15

7:00 am-12:39 am

2 stops17h 39m

Ottawa

Mon 4/20

5:40 am-10:46 am

2 stops29h 06m

$795

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 7/14

8:15 am-1:59 pm

1 stop5h 44m

Ottawa

Mon 7/20

6:25 am-5:33 pm

1 stop11h 08m

$809

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Fri 4/3

6:00 am-9:35 pm

1 stop15h 35m

Ottawa

Mon 4/6

5:25 pm-9:39 am

1 stop16h 14m

$809

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 5/6

6:15 am-1:59 pm

1 stop7h 44m

Ottawa

Sat 5/9

6:25 am-9:02 pm

1 stop14h 37m

$809

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 4/29

6:00 am-5:07 pm

1 stop11h 07m

Ottawa

Sun 5/3

6:25 am-2:13 pm

1 stop7h 48m

$809

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 4/27

6:00 am-1:59 pm

1 stop7h 59m

Ottawa

Wed 4/29

10:44 am-5:33 pm

1 stop6h 49m

$809

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 5/26

8:15 am-1:59 pm

1 stop5h 44m

Ottawa

Sun 5/31

6:25 am-1:57 pm

1 stop7h 32m

$809

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/28

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Baltimore to Ottawa

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Ottawa in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-Ottawa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baltimore to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to Ottawa

What is the cheapest month to book a flight from Baltimore to Ottawa?

Currently, March is the cheapest month in which you can book a flight from Baltimore to Ottawa (average of $112). Flying from Baltimore to Ottawa in December is currently the most expensive (average of $221). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Baltimore to Ottawa?

    A quick flight from Baltimore to Ottawa can take about 5h 44m. Delta provides one of the quickest options available for as low as $809. There are 427 mi between Baltimore and Ottawa. This flight may include one or multiple stops.

  • Can I find deals for flights from Baltimore to Ottawa that include hotel bookings?

    Yes. In addition to deals on Baltimore to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to Ottawa.

  • Can I find deals for business class flights from Baltimore to Ottawa?

    Yes. Cheapflights offers flight deals from Baltimore to Ottawa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to Ottawa?

    Currently, March is the cheapest month in which you can book a flight from Baltimore to Ottawa (average of $112). Flying from Baltimore to Ottawa in December is currently the most expensive (average of $221). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Petawawa

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.